I read this response by Nvidia to Linus' F-bomb - Nvidia Issues Diplomatic Response to Linus Torvalds' F-Bomb as subtly hinting that they soft-pedalled Linux driver development to keep the different platform performances 'consistent' as they put it.In other words, Nvidia is well aware of the performance gains that *could* be gained on Linux / OpenGL and decided not to make it evident, for whatever marketing / butt-kissing / lucrative reason.